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IMPROVEMENT IN SAW-HORSES 0R BUCK @he rtehulz mimi: tu in these glitters nteut mit making tari ni the sans.

T0 ALL PERSONSTO WOM THESE PRESENTS SHALL COME:

Be it known that I, HENRY M. HAYWABD, of Boston,n the county of Suffolk, and State of Massachusetts,

have made a. new and useful 'invention having reference to Saw-Horses; and I do hereby declare the salue to be fully described in the following specification, and represented in the accompanying drawings, of which* Figure 1 is a longitudinal, und l 1 Figure 2 a transversed section inf a sawlhorse in a'folded state and provided with my invention.

Figure 8 is a. side view, and

Figure 4 an edge view of one of the plates or parts of its stop-joint.

Figure 5 is a side viewo ,the horse, as unfolded or ready for receiving a log of wood to be sztwed.`

The said saw-horse consists in' the :nain of two sets of parallel hars, A A and B B, oneof which has its bars arrangedbetween and a ainstthose o the'other. Each pair of hars is connected near their lower ends, by one of two ties or cross-hers, a msecured into them. Where the two sets of bars unintended to cross one another, a

ylindrical sheftor rod, `is extended through them, it being connected to the two inner bars. The two outer: i

bars turn freely on it, and are kept in place bylwashers, a c, and screws, d d, the said washers being applied to the ends` of theI shaft and alixed thereto by the screws. A roller, C, is placed ou and so as to be capable of being freely revolved onthe shaft, and extends from one of the inner bars to the other. Should the saw, after having sawedthrongh a log'fne brought and moved against the roller, the latter, in consequence of being eapable of freely revolving' on the shaft, will no t be s'o likely to beinjured by the saw as it would were it stationary, as is the middle bar of ai common saw-hors@ as ordinarily made, which in a. short time becomes cut through or greatly damaged by the saw. I apply to two of the bars, A B, which are next adjacent to each other, what I term a s'top-joint, it being composed of two oiroular dat annul, f f, each of which has one or two. flanges, g g;

extending fromone side of it at its periphery, the same being ns shown in figs. 8 and 4. I fasten bymeans of screws onel of these annnli to the inner side of each of the said bars A B, and arrange the annuli coneentrioally with the shaft or rod 1J; and so that each of the flanges of one of the said annuli may overlap the periphery of the other between its two anges. Whenv the saw-horse is opened, or its parts are in position to receive a log,

the anges of one annulusbring up against those of the other, so as to arrest the bars A A and B B iu their` properangular positions, and hold them therein while the log 'is in' the ac't of being sawed. They also admit of the two 'inner bars being folded within and in the same plane with the outer ones.

I c laim as my invention the following,` viz l claim the improved saw-horse es constructed with stop-joints as described.' Y I also claim the application -or arrangement of the roller with u. saw-horse so as to operate or tnrn on its middle connecting rod or bar in manner and for the purpose as hereinhefore set forth.

HENRY M. HAYWARD.

Witnesses R. H.,Ennr, F. P. HALE', Jr. 

